Wash your basil leaves and spin them in a salad spinner or pat them dry with a clean towel. Add the basil to a mini food processor or blender and pulse to chop the leaves roughly.
Add the cheese, seeds, lemon juice, garlic, and seasonings, and start the food processor or blender. As it runs, drizzle in the olive oil and continue blending until a smooth, creamy pesto sauce forms.
Use immediately or store in the refrigerator for 5 days or the freezer for a year.
Notes
* Sunflower seeds, pumpkin seeds, sesame seeds, or hemp seeds are great nut alternatives for pesto. I recommend toasting them in a skillet over medium-low heat for a few minutes to bring out a nuttier flavor. If you prefer to avoid seeds, you can omit them.